The Enzyme Database

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Accepted name: pyrogallol 1,2-oxygenase
Reaction: 1,2,3-trihydroxybenzene + O2 = (2Z,4E)-2-hydroxyhexa-2,4-dienedioate
Glossary: (2Z,4E)-2-hydroxyhexa-2,4-dienedioate = (2Z,4E)-2-hydroxymuconate
1,2,3-trihydroxybenzene = pyrogallol
Other name(s): pyrogallol 1,2-dioxygenase; 1,2,3-trihydroxybenzene:oxygen 1,2-oxidoreductase (decyclizing)
Systematic name: 1,2,3-trihydroxybenzene:oxygen 1,2-oxidoreductase (ring-opening)
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 78310-68-6
1.  Groseclose, E.E. and Ribbons, D.W. Metabolism of resorcinylic compounds by bacteria: new pathway for resorcinol catabolism in Azotobacter vinelandii. J. Bacteriol. 146 (1981) 460–466. [PMID: 7217008]
[EC created 1984, modified 2012]
Accepted name: pyrogallol hydroxytransferase
Reaction: 1,2,3,5-tetrahydroxybenzene + 1,2,3-trihydroxybenzene = 1,3,5-trihydroxybenzene + 1,2,3,5-tetrahydroxybenzene
Other name(s): 1,2,3,5-tetrahydroxybenzene hydroxyltransferase; 1,2,3,5-tetrahydroxybenzene:pyrogallol transhydroxylase; 1,2,3,5-tetrahydroxybenzene-pyrogallol hydroxyltransferase (transhydroxylase); pyrogallol hydroxyltransferase; 1,2,3,5-tetrahydroxybenzene:1,2,3-trihydroxybenzene hydroxyltransferase
Systematic name: 1,2,3,5-tetrahydroxybenzene:1,2,3-trihydroxybenzene hydroxytransferase
Comments: 1,2,3,5-Tetrahydroxybenzene acts as a co-substrate for the conversion of pyrogallol into phloroglucinol, and for a number of similar isomerizations. The enzyme is provisionally listed here, but might be considered as the basis for a new class in the transferases, analogous to the aminotransferases.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, UM-BBD, CAS registry number: 176591-26-7
1.  Brune, A. and Schink, B. Pyrogallol-to-phloroglucinol conversion and other hydroxyl-transfer reactions catalyzed by cell extracts of Pelobacter acidigallici. J. Bacteriol. 172 (1990) 1070–1076. [DOI] [PMID: 2298693]
[EC created 1992]
Accepted name: gallate decarboxylase
Reaction: 3,4,5-trihydroxybenzoate = 1,2,3-trihydroxybenzene + CO2
Glossary: 3,4,5-trihydroxybenzoate = gallate
1,2,3-trihydroxybenzene = pyrogallol
Other name(s): gallic acid decarboxylase; gallate carboxy-lyase; 3,4,5-trihydroxybenzoate carboxy-lyase (pyrogallol-forming)
Systematic name: 3,4,5-trihydroxybenzoate carboxy-lyase (1,2,3-trihydroxybenzene-forming)
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, UM-BBD, CAS registry number: 37290-51-0
1.  Grant, D.J.W. and Patel, J.C. Non-oxidative decarboxylation of p-hydroxybenzoic acid, gentisic acid, protocatechuic acid, and gallic acid by Klebsiella aerogenes (Aerobacter aerogenes). J. Microbiol. Serol. 35 (1969) 325–343. [PMID: 5309907]
2.  Zeida, M., Wieser, M., Yoshida, T., Sugio, T. and Nagasawa, T. Purification and characterization of gallic acid decarboxylase from Pantoea agglomerans T7. Appl. Environ. Microbiol. 64 (1998) 4743–4747. [PMID: 9835557]
3.  Jimenez, N., Curiel, J.A., Reveron, I., de Las Rivas, B. and Munoz, R. Uncovering the Lactobacillus plantarum WCFS1 gallate decarboxylase involved in tannin degradation. Appl. Environ. Microbiol. 79 (2013) 4253–4263. [DOI] [PMID: 23645198]
[EC created 1972]

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